CN107264633B

CN107264633B - Vehicle structure

Info

Publication number: CN107264633B
Application number: CN201710093173.6A
Authority: CN
Inventors: 长泽勇; 岩田觉; 神长和宏
Original assignee: Subaru Corp
Current assignee: Subaru Corp
Priority date: 2016-03-31
Filing date: 2017-02-21
Publication date: 2021-08-27
Anticipated expiration: 2037-02-21
Also published as: US20170282982A1; JP6568820B2; DE102017204510A1; CN107264633A; JP2017178184A; US10246142B2

Abstract

The invention relates to a structure of a vehicle, and aims to prevent mud, dirt and the like from adhering to a structure protruding from a vehicle body of the vehicle. In a structure (10) of a vehicle protruding from a vehicle body (2), a lower blade surface (12) and an upper blade surface (11) are provided back to back between a front edge and a rear edge with respect to the front-rear direction of the vehicle body (2), and airflow flows along the surfaces of the front edge and the rear edge. The surface length of the lower airfoil surface (12) in the front-rear direction is formed longer than the surface length of the upper airfoil surface (11) in the front-rear direction. In the structure (10), an imaging window (13) for imaging the outside of the vehicle body (2) is provided on the lower blade surface (12).

Description

Vehicle structure

Technical Field

The present invention relates to a structure protruding from a vehicle body of a vehicle.

Background

As described in patent document 1, a vehicle such as an automobile is provided with a door mirror. In the door mirror, a mirror is provided on a surface on the rear side. The passenger can visually confirm the traffic situation or the like behind the vehicle by looking at the door mirror.

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent application publication No. 2014-167726

Disclosure of Invention

Problems to be solved by the invention

However, the door mirror is provided to protrude leftward and rightward from a side surface of the vehicle body. Further, a mirror needs to be disposed on the rear surface of the door mirror. Therefore, the airflow flowing from the front to the rear along the side of the vehicle is disturbed by the door mirror. The rear side of the door mirror generates a vortex air flow that is drawn into a flat mirror surface from the vertical direction, for example. As a result, dirt, splashed mud, and the like outside the vehicle may adhere to the mirror provided in the door mirror.

In the vehicle, it is required that the structure protruding from the vehicle body is less likely to be attached with mud, dirt, and the like.

Means for solving the problems

A structure of a vehicle according to the present invention is a structure of a vehicle that is provided to protrude from a vehicle body, wherein a first airflow surface and a second airflow surface, on which airflow flows along respective surfaces, are provided back to back between a front edge and a rear edge with respect to a front-rear direction of the vehicle body, a surface length of the first airflow surface in the front-rear direction is formed to be longer than a surface length of the second airflow surface in the front-rear direction, and an imaging window for imaging an outside of the vehicle body is provided on the first airflow surface.

Preferably, in the structure, a camera (カメラ) that photographs the outside of the vehicle body may be provided, and the imaging window is provided for the camera.

Preferably, the structure may be provided to protrude leftward and rightward from the vehicle body.

Preferably, the structure may have an aerofoil cross-sectional shape from the leading edge to the trailing edge with the first and second airflow surfaces formed back to back.

Preferably, the structure may have a symmetrical airfoil cross-sectional shape in which the first airflow surface and the second airflow surface are formed into symmetrical curved surface shapes, and the first airflow surface is provided obliquely with respect to a front-rear direction of the vehicle body so as to be located rearward of the second airflow surface.

Preferably, an end portion of the structure on the trailing edge side may protrude toward the second airflow surface side.

Preferably, the structure may have an asymmetric airfoil cross-sectional shape in which the first airflow surface is formed thicker than the second airflow surface.

Preferably, the structure may be provided with a communication hole communicating from a bent portion near the leading edge to a portion near the trailing edge on the first airflow surface.

Preferably, the second airflow surface of the structural body may be formed as a flat surface.

Preferably, the structural body is provided such that angles of the first airflow surface and the second airflow surface with respect to the airflow in the front-rear direction of the vehicle body are variable, and the structural body has a control portion that controls the angles of the first airflow surface and the second airflow surface with respect to the airflow in the front-rear direction of the vehicle body in accordance with a pressure of the first airflow surface and a pressure of the second airflow surface.

Effects of the invention

In the present invention, in the structure protruding from the vehicle body of the vehicle, the lower blade surface and the upper blade surface, along which the airflow flows along the respective surfaces, are provided back to back between the front edge and the rear edge of the structure with reference to the front-rear direction of the vehicle body. The surface length of the lower blade surface in the front-rear direction is formed to be longer than the surface length of the upper blade surface in the front-rear direction. Thus, the lower airflow flowing along the surface of the lower airfoil is faster than the upper airflow flowing along the surface of the upper airfoil, and the pressure at the surface of the lower airfoil drops. As a result, even if dirt, mud, or the like is contained in the down stream, the down stream is less likely to flow to the lower blade surface. Further, dirt, mud, and the like are less likely to adhere to the lower blade surface provided with the imaging window for imaging the outside of the vehicle body.

Drawings

Fig. 1 is an explanatory view of a relationship between an automobile to which an embodiment of the invention is applied and airflow;

fig. 2 is an explanatory diagram of the relationship between the shape of the structure and the airflow in the present embodiment;

FIG. 3 is an explanatory diagram of a rear monitoring device used in the automobile of FIG. 1;

fig. 4 is an explanatory view of a modification of the shape of the structure of fig. 2;

fig. 5 is an explanatory diagram of a modification example of the structure of the present embodiment.

Description of the symbols

1 … Car (vehicle)

2 … vehicle body

3 … front part

4 … occupant part

5 … rear part

6 … pillar

10 … Structure

11 … Upper wing surface (second airflow surface)

12 … lower wing surface (first airflow surface)

13 … camera shooting window

14 … communication hole

20 … rear monitoring device

21 … Camera

22 … curved surface correction processing unit

23 … display part

24 … actuator

25 … pressure sensor

26 … control part

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is an explanatory diagram of a relationship between an automobile 1 to which an embodiment of the present invention is applied and an airflow. Fig. 1 (a) is a side view. Fig. 1 (B) is a plan view. The automobile 1 is an example of a vehicle.

The automobile 1 of fig. 1 has a vehicle body 2. The vehicle body 2 has a passenger portion 4 provided with an opening/closing door, and a front portion 3 and a rear portion 5 projecting forward and rearward thereof. The surface of the vehicle body 2 is formed into a curved surface shape that simulates a streamline shape so that an airflow that flows substantially uniformly from front to back due to the traveling of the automobile 1 flows along the surface. By the lower air resistance, higher aerodynamic characteristics and energy efficiency can be achieved. In fig. 1, the gas flow is indicated by a dashed line.

Fig. 2 is an explanatory diagram of the relationship between the shape of the structure 10 and the airflow in the present embodiment. The structure 10 shown in fig. 2 is an alternative to a door mirror, and is provided with a pillar 6 projecting laterally from a side surface of the vehicle body 2 as shown in fig. 1.

The structure 10 of fig. 2 has an elongated symmetrical aerofoil shape in a direction perpendicular to fig. 2. The structure 10 is set in an inclined posture in which the rear side is higher than the front side.

The structure 10 having a symmetrical airfoil sectional shape has the same longitudinal sectional shape as a falling water droplet, as shown by a broken line in fig. 2. The upper airfoil surface 11 and the lower airfoil surface 12 of the symmetrical structure formed back to back from the leading edge to the trailing edge have airfoil shapes symmetrical with respect to the chord in a state where the chord connecting the leading edge and the trailing edge of the symmetrical structure rotates in conformity with the front-rear direction of the vehicle body. By being formed in the airfoil shape, the airflow flowing near the lower airfoil surface 12 or the upper airfoil surface 11 can flow along the respective surfaces without being peeled off from the respective surfaces. In the following description, the airflow flowing near the lower airfoil surface 12 is referred to as a lower airflow, and the airflow flowing near the upper airfoil surface 11 is referred to as an upper airflow.

The structure 10 having a symmetrical airfoil section shape of the lower airfoil 12 and the upper airfoil 11 is disposed obliquely with respect to the front-rear direction of the vehicle body 2 such that the lower airfoil 12 faces rearward more than the upper airfoil 11. Thus, the surface length of the lower blade surface 12 along the front-rear direction of the vehicle body 2 from the front edge to the rear edge in a state of being attached to the vehicle body 2 is longer than the surface length of the upper blade surface 11. In the following description of the present embodiment, the upper blade surface 11 and the lower blade surface 12 based on this definition are used.

Fig. 3 is an explanatory diagram of the rear monitoring device 20 used in the automobile 1 of fig. 1.

The rear monitoring device 20 shown in fig. 3 includes a camera 21, a curved surface correction processing unit 22, and a display unit 23.

The camera 21 has, for example, an image pickup semiconductor device. The camera 21 is disposed rearward in the structure 10 protruding leftward and rightward from the side surface of the vehicle body 2.

In the structure 10, an imaging window 13 is provided at a rear portion of the lower blade surface 12. The imaging window 13 may be formed of a transparent or translucent resin material that transmits visible light. The surface of the imaging window 13 is formed in the same airfoil shape as the lower airfoil 12. The camera 21 images the outside of the structure 10, that is, the rear of the vehicle, through the imaging window 13.

The curved surface correction processing unit 22 is connected to the camera 21. The curved surface correction processing unit 22 removes a component deformed by the airfoil-shaped imaging window 13 from the image captured by the camera 21. This makes it possible to obtain an image without distortion, which is obtained by a flat mirror surface, for example.

The display unit 23 is, for example, a display device. The display unit 23 may be provided in the occupant unit 4, for example, diagonally forward of the driver's seat. The display unit 23 is connected to the curved surface correction processing unit 22, and displays the image provided by the curved surface correction processing unit 22 without distortion. Thus, the driver can confirm the traffic situation or the like behind the vehicle through the image displayed on the display unit 23.

In this way, the camera 21 of fig. 3 is provided inside the structure 10 of fig. 2, and photographs the outside rearward from the imaging window 13 of the lower blade surface 12 of the structure 10 of the symmetrical blade cross-sectional shape.

The structure 10 of fig. 2 is formed in a symmetrical wing sectional shape, and the rear portion is provided in a raised manner on the vehicle body 2. In addition, the lower airfoil surface 12 is longer than the upper airfoil surface 11.

Therefore, the airflow flowing substantially uniformly from front to back on the side surface of the vehicle body 2 does not disturb by the structure 10, but flows along the upper wing surfaces 11 of the structure 10 and simultaneously flows along the lower wing surfaces 12. Vortex airflow is not easily generated.

Moreover, the lower airflow flowing along the lower airfoil surface 12 is faster than the upper airflow flowing along the upper airfoil surface 11, and becomes low pressure.

Therefore, as shown in fig. 2, even if dirt, splashed mud, and the like outside the vehicle are contained in the down airflow flowing along the lower airfoil 12, the dirt and mud do not move toward the imaging window 13 of the lower airfoil 12, but flow toward the rear side of the imaging window 13 along with the airflow.

As a result, dirt, splashed mud, and the like outside the vehicle are less likely to adhere to the imaging window 13.

As described above, in the present embodiment, in the structure 10 protruding into substantially the same airflow flowing rearward from the front of the vehicle body 2, the lower blade surface 12 and the upper blade surface 11 along which the airflow flows along the respective surfaces are provided back to back between the front edge and the rear edge of the structure 10 with respect to the front-rear direction of the vehicle body 2. The surface length of the lower blade surface 12 in the front-rear direction is formed longer than the surface length of the upper blade surface 11 in the front-rear direction. Therefore, the lower airflow flowing along the surface of the lower airfoil surface 12 is faster than the upper airflow flowing along the surface of the upper airfoil surface 11, and the pressure of the surface of the lower airfoil surface 12 drops. As a result, even if dirt, mud, or the like is contained in the down stream, a swirling stream that is entrained in the lower blade surface 12 is less likely to be generated. Dirt, mud, and the like are less likely to adhere to the lower blade surface 12 of the structure 10.

Further, since the imaging window 13 for imaging the outside of the vehicle body 2 is provided in the lower blade surface 12, the imaging window 13 is less likely to be dirty. The structural body 10 can be preferably used as a substitute for, for example, a door mirror.

In the present embodiment, the structure 10 is provided with a camera 21 for imaging the outside of the vehicle body 2, and the imaging window 13 is provided for the camera 21. Therefore, the camera 21 can stably capture the outside of the vehicle body 2 for a long period of time through the imaging window 13 which is less likely to be dirty.

In the present embodiment, the structure 10 is provided to protrude laterally from the side surface of the vehicle body 2. Therefore, the structural body 10 is less likely to suffer from turbulence of the airflow caused by the vehicle body 2 itself. Further, the structure 10 can be made to project into the airflow that flows substantially equally from the front to the rear of the traveling vehicle body 2.

In the present embodiment, the structure 10 has a blade cross-sectional shape formed back to back from the leading edge to the trailing edge, and the lower blade surface 12 and the upper blade surface 11 are formed so as to be convex upward and downward. Thus, a lower airflow flowing along the surface of the lower airfoil surface 12 and an upper airflow flowing along the surface of the upper airfoil surface 11 can be generated. Further, turbulence of the air flow caused by the structure 10 can be suppressed to the minimum. The turbulence of the airflow caused by the structure 10 can be suppressed, and the deterioration of the aerodynamic characteristics of the vehicle can be suppressed.

In the present embodiment, the structure 10 has a symmetrical blade cross-sectional shape in which the lower blade surface 12 and the upper blade surface 11 are symmetrical curved surface shapes, and is disposed to be inclined with respect to the front-rear direction of the vehicle body 2 so that the lower blade surface 12 is located rearward of the upper blade surface 11. Thus, the lower air flow flowing along the surface of the lower airfoil surface 12 is faster than the upper air flow flowing along the surface of the upper airfoil surface 11.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited thereto, and various modifications and changes can be made without departing from the scope of the present invention.

Fig. 4 is an explanatory diagram of a modification of the shape of structure 10 in fig. 2.

In fig. 4 (a), the rear end portion of the structural body 10 protrudes upward as compared with fig. 2.

In this manner, by making the end portion on the trailing edge side of the structure 10 project toward the upper airfoil 11 side, the lower airflow flowing along the surface of the lower airfoil 12 is faster than the upper airflow flowing along the surface of the upper airfoil 11. The difference between the speed of the lower air flow and the speed of the upper air flow can be increased.

Further, the end portion on the trailing edge side of the structure 10 is projected toward the upper blade face 11 side, whereby the structure 10 has an asymmetric blade cross-sectional shape.

In fig. 4 (B), the lower blade face 12 side of the structure 10 is formed thicker than the upper blade face 11 side, as compared with fig. 2.

By providing the asymmetric airfoil cross-sectional shape with the lower airfoil surface 12 side being thick in this manner, the lower airflow flowing along the surface of the lower airfoil surface 12 is faster than the upper airflow flowing along the surface of the upper airfoil surface 11. The difference between the speed of the lower air flow and the speed of the upper air flow can be increased.

In fig. 4 (B), a communication hole 14 is formed on the lower blade surface 12 side so as to communicate from a bent portion near the leading edge to a portion near the trailing edge. A part of the lower airflow flowing along the lower blade surface 12 enters the communication hole 14 from the bent portion of the lower blade surface 12, and bypasses to the vicinity of the trailing edge of the lower blade surface 12.

By introducing a part of the air from the curved portion of the lower blade surface 12 in this way, the airflow is less likely to peel off from the lower blade surface 12 at the curved portion of the lower blade surface 12. As a result, the lower airflow flowing along the surface of the lower airfoil surface 12 can flow along the surface of the lower airfoil surface 12 including the curved portion.

In fig. 4 (C), the upper surface of the structure 10 is formed as a flat surface. That is, the upper blade surface 11 is formed as a flat surface. In this case too, the lower air flow flowing along the surface of the lower airfoil surface 12 is faster than the upper air flow flowing along the surface of the upper airfoil surface 11.

Fig. 4 (D) is an example in which the structure 10 of fig. 4 (C) is upside down.

In this case, the surface length of the lower blade surface 12 along the front-rear direction of the vehicle body 2 is shorter than the surface length of the upper blade surface 11. The upper air flow flowing along the surface of the upper airfoil 11 is faster than the lower air flow flowing along the surface of the lower airfoil 12. Thus, the imaging window 13 may be provided on the upper airfoil 11. In this case as well, by disposing the imaging window 13 rearward on the upper blade surface 11, the imaging window 13 is less likely to have dirt and mud adhered thereto.

Fig. 5 is an explanatory diagram of a modification example of the structure 10 of the present embodiment.

In fig. 5, the structural body 10 is rotatably provided in a vertical plane with respect to the pillar 6. That is, the angles of the upper wing surface 11 and the lower wing surface 12 provided back-to-back with respect to the airflow along the front-rear direction of the vehicle body 2 may vary. Further, an actuator 24 for rotationally driving and positioning the structure 10 with respect to the column 6 is provided. A pair of pressure sensors 25 are provided on the upper blade surface 11 and the lower blade surface 12 of the structure 10. The detection values of the pair of pressure sensors 25 are input to the control unit 26, and the control unit 26 controls the actuator 24.

In this case, the control unit 26 operates the actuator 24 such that, for example, the difference between the detection value of the lower pressure sensor 25 and the detection value of the upper pressure sensor 25 is increased, or the detection value of the lower pressure sensor 25 is decreased by a predetermined value from the detection value of the upper pressure sensor 25. As a result, regardless of the traveling condition, the lower airflow flowing along the lower blade surface 12 of the structure 10 can be maintained faster than the upper airflow flowing along the upper blade surface 11. The camera window 13 provided on the lower blade surface 12 can be maintained in a state where dirt and mud are less likely to adhere thereto.

In addition, when this control is executed, the curved surface correction processing section 22 of fig. 3 may cut out a part of the image captured by the camera 21 and display the cut-out part on the display section 23. When the angle of the structure 10 with respect to the pillar 6 is changed, the cut range of the image can be shifted in the opposite direction. Thus, although the posture of the structure 10 is variably controlled, an image in a certain direction can be constantly displayed on the display unit 23.

The actuator 24, the pair of pressure sensors 25, and the control unit 26 shown in fig. 5 are part of the rear monitoring device 20 shown in fig. 3.

Claims

1. A structural body of a vehicle, which is provided to protrude from a vehicle body main body,

in the structure, a first airflow surface and a second airflow surface are arranged back to back between a front edge and a rear edge which are based on the front-rear direction of the vehicle body and along which airflow flows along the surfaces of the front edge and the rear edge,

a surface length of the first airflow surface in the front-rear direction is formed longer than a surface length of the second airflow surface in the front-rear direction,

in the structure, an imaging window for imaging the outside of the vehicle body is provided on the first airflow surface,

the structure has an airfoil cross-sectional shape with the first airflow surface and the second airflow surface formed back-to-back from the leading edge to the trailing edge.

2. The structural body of a vehicle according to claim 1,

a camera for photographing an outside of the vehicle body is provided in the structural body,

the imaging window is provided for the camera.

3. The structural body of a vehicle according to claim 1,

the structure is provided to protrude laterally from the vehicle body.

4. The structural body of a vehicle according to claim 1,

the structure has a symmetrical airfoil cross-sectional shape in which the first airflow surface and the second airflow surface are formed into a symmetrical curved surface shape,

the first airflow surface is provided obliquely with respect to the front-rear direction of the vehicle body so as to be located rearward of the second airflow surface.

5. The structural body of a vehicle according to claim 1,

the end portion of the structure on the trailing edge side protrudes toward the second airflow surface side.

6. The structural body of a vehicle according to claim 1,

the structure has an asymmetric airfoil cross-sectional shape in which the first airflow surface is formed thicker than the second airflow surface.

7. The structural body of a vehicle according to claim 1,

the structure has a communication hole formed in the first airflow surface and communicating from a bent portion near the leading edge to a portion near the trailing edge.

8. The structural body of a vehicle according to claim 1,

the second gas flow surface of the structure is formed as a flat surface.

9. The structural body of a vehicle according to any one of claims 1 to 8,

the structure is provided so that the angles of the first airflow surface and the second airflow surface with respect to the airflow along the front-rear direction of the vehicle body can be changed,

the structure has a control unit that controls an angle of the first airflow surface and the second airflow surface with respect to an airflow along a front-rear direction of the vehicle body, based on a pressure of the first airflow surface and a pressure of the second airflow surface.